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了解分布极限:对比水热生理学和干旱脆弱性在两个parapatric毒蛇在他们的杂交区

Inês Freitas^1,2,3, Olivier Lourdais⁴, Mathias Dezetter⁴

¹CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Campus de Vairão, Universidade do Porto, 4485-661 Vairão, Portugal.

The Journal of experimental biology

|December 29, 2025

概括

气候变化威胁着生物多样性. 适应温暖的毒蛇Vipera latastei比适应寒冷的毒蛇Vipera aspis更能耐受干旱,这表明它在气候变化方面具有优势.

科学领域:

生态生态学生态生态学
生理学生理学生理学
气候变化生物学气候变化生物学

背景情况:

气候变化和极端事件对生物多样性构成挑战.
了解物种的生理极限对于预测反应至关重要,特别是在分布边缘.
温暖化和干燥化对生理压力的综合影响还没有得到充分的研究.

研究的目的:

比较两种族蛇 (Vipera aspis和Vipera latastei) 对温度上升和干燥的生理耐受性.
评估这些物种及其杂交物种对气候变化影响的脆弱性.
研究不同的气候如何影响生理反应.

主要方法:

开放流呼吸计用于测量在不同温度下怀孕的蛇母体的标准代谢率 (SMR) 和总蒸发性水损失 (TEWL).
模拟新生儿的干旱条件 (14天),操纵水的可用性和空气蒸汽压力赤字.
对Vipera aspis,Vipera latastei及其杂交物之间的生理数据进行比较分析.

主要成果:

与Vipera latastei和混合物相比,Vipera aspis的SMR和TEWL都高于Vipera latastei和混合物,特别是在更高的温度 (33°C) 中.
干旱模拟在Vipera aspis新生儿中引起了明显的质量损失和生长抑制.
杂交物对干旱的反应中介,而Vipera latastei对干旱的耐受性更强.

结论:

维佩拉拉塔斯泰 (Vipera latastei) 适应了更温暖,更干燥的条件,表现出优越的干旱耐受性.
两种毒蛇物种之间的生理差异凸显了两种毒蛇物种对气候变化的脆弱性.
在气候变化情景下,Vipera latastei的干旱耐受性可能会在混合区带来未来的优势.

关键词:

干旱性干旱性干旱性干旱干旱干旱干旱电热生物 (Ectotherms) 是一种热体生物.混合化是一种混合化.范围的利率范围的利率热水调节是一种热水调节.

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